Using import package with foreach loop

Question

I have nested folders with multiple files containing statements and solutions for exercices.

main.tex
exercices (folder)
⮑ statements (folder)
   ⮑  1.tex
   ⮑  2.tex
⮑ solutions (folder)
   ⮑  2.tex

From what I understand on few topics like input files in different directories, you cannot input files from different nested directories and need to use the import package. So this was the previous code :

\foreach \filenumber in {1,2}{
  \IfFileExists{exercices/statements/\filenumber}{\input{exercices/statements/\filenumber}}
  \IfFileExists{exercices/solutions/\filenumber}{\input{exercices/solutions/\filenumber}}
}

The issue is that the following code still doesn't work with the \import command.

\documentclass{book}
\usepackage{import}
\usepackage{tikz}

\begin{document}
\foreach \filenumber in {1,2}{
  \IfFileExists{exercices/statements/\filenumber}{\import{exercices/statements/}{\filenumber}}
  \IfFileExists{exercices/solutions/\filenumber}{\import{exercices/solutions/}{\filenumber}}
  }
\end{document}

The code gives the error LaTeX Error: File exercices/solutions/1.tex' not found.

Answer 1

You could use \input but here you simply want \InputIfFileExists

\documentclass{book}

\usepackage{pgffor}

\begin{document}
\foreach \filenumber in {1,2}{%
  \InputIfFileExists{exercices/statements/\filenumber}{}{}\par
  \InputIfFileExists{exercices/solutions/\filenumber}{}{No solution}\par
  }
\end{document}

The terminal and log show the three files being input:

(./exercices/statements/1.tex) (./exercices/solutions/1.tex)
(./exercices/statements/2.tex) [1

Producing

If you put suitable text such as "ex1" in 1.tex